# Perimeter formulas

Here, find the perimeter formulas for some regular polygons

A regular polygon is a polygon with equal sides and equal angles.

If we let s be the length of one sides, we can find the perimeter as demonstrated in this lesson

Equilateral triangle:

Perimeter = s + s + s

Perimeter = 3 × s

For example, if s = 4 inches,   Perimeter = 3 × 4 = 12 inches

Rhombus:

Perimeter = s + s + s + s

Perimeter = 4 × s

For example, if s = 5 meters,   Perimeter = 4 × 5 = 20 meters

Square:

Perimeter = s + s + s + s Perimeter = 4 × s

For example, if s = 6 meters,   Perimeter = 4 × 6 = 24 meters

Regular pentagon:

Perimeter = s + s + s + s + s

Perimeter = 5 × s

For example, if s = 8 feet,   Perimeter = 5 × 8 = 40 feet

Regular hexagon:

Perimeter = s + s + s + s + s + s

Perimeter = 6 × s

For example, if s = 5 feet,   Perimeter = 6 × 5 = 30 feet

## Recent Articles

1. ### Optical Illusions with Geometry

Oct 22, 18 04:14 PM

Take a good look at these optical illusions with geometry

New math lessons

Your email is safe with us. We will only use it to inform you about new math lessons.

## Recent Lessons

1. ### Optical Illusions with Geometry

Oct 22, 18 04:14 PM

Take a good look at these optical illusions with geometry

Tough Algebra Word Problems.

If you can solve these problems with no help, you must be a genius!

Everything you need to prepare for an important exam!

K-12 tests, GED math test, basic math tests, geometry tests, algebra tests.

Real Life Math Skills

Learn about investing money, budgeting your money, paying taxes, mortgage loans, and even the math involved in playing baseball.